diff --git a/.gitmodules b/.gitmodules
index e2dcd2b8a4..326e1fe506 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "aux/broctl"]
 	path = aux/broctl
 	url = git://git.icir.org/broctl
+[submodule "aux/btest"]
+	path = aux/btest
+	url = git://git.icir.org/btest
diff --git a/aux/btest b/aux/btest
new file mode 160000
index 0000000000..a2b04952ae
--- /dev/null
+++ b/aux/btest
@@ -0,0 +1 @@
+Subproject commit a2b04952ae91dcd27d5e68a42d5d26c291ecb1f5